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Tungsten 2025年第1期7卷 80-87页

作者： Fang-Qian Wang Yin Zhang wei-wei Wang Mei-Qian Fu Hong-Bing Mo wei-dong yu Chao Liu Jun Yan College of Chemistry and Chemical Engineering Central South University Junior Education Department Changsha Normal University School of Science Hunan University of Technology and Business

Arsenic-vanadium polyoxometalates（POMs） represent a family of tremendous potential catalysts owing to their peculiar physical and chemical *** in CO2conversion,using POMs to catalyze the conversion of CO2and epoxide into chemical intermediates is the research ***,A new family number of arsenic-vanadium POMs,[N（CH3）4]4[As8V12O38（H2O）]·2H2O({As8V12O38}),was reported and characterized by single-crystal X-ray diffraction,fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy,*** from other allotropicity,{As8V12O38}shows a different structure pattern with an I-43d *** obtained {As8V12O38} was employed as a catalyst for the *** initial catalytic reaction confirmed that {As8V12O38} can catalyze the formation of epoxy carbonate by using 1.01 kPa CO2and epoxide at 70℃.Furtherly,when added amine in the catalytic system,oxazolidinone could be obtained by high yields,which provides an efficient way to convert CO2into profitable ***,a possible catalytic reaction mechanism was proposed by using different characterization analyses.{As8V12O38} first catalyzes the epoxide and CO2to form an epoxy carbonate and then catalyzes epoxy carbonate and benzylamine into oxazolidinone.

关键词： Arsenic CO2 conversion Oxazolidinone Polyoxometalates Vanadium

Research on the novel asymmetric frequency division duplex technique

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The Journal of China Universities of Posts and Telecommunications 2006年第4期13卷 13-18页

作者： ZHANG Ying-hai WANG wei-dong dong yu ZHOU Kai-Jie Information and Electronics Technology Laboratory Beijing University of Posts and Telecommunications Beijing 100876 China

This article introduces a novel duplex transmission technique-asymmetric frequency division duplex （AFDD）. One of the characteristics in future mobile systems is asymmetric characteristic caused by service requirement and electromagnetic radiation, AFDD is designed to adapt to the new asymmetric characteristics. The AFDD puts forward a novel adaptive frequency-allocation scheme in downlink and uplink. Combining AFDD with code division multiple access （CDMA） communication system, it is proven that AFDD improves the capacity and coverage of the system compare with FDD CDMA system.

关键词： asymmetric characteristics AFDD Duplex Mobile communications

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Dimensional Reduction of Eu-Based Metal-Organic Framework as Catalysts for Oxidation Catalysis of C(sp^(3))-H Bond

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Chinese Journal of Chemistry 2022年第4期40卷 480-486页

作者： Yin Zhang wei-dong yu Cai-Feng Zhao Jun Yan Junior Education Department Changsha Normal UniversityChangshaHunan 410100China College of Science Hunan University of Technology and BusinessChangshaHunan 410000China College of Chemistry and Chemical Engineering Central South UniversityChangshaHunan 410000China Hunan Institute of Nuclear Agricultural Science and Space Breeding Hunan Academy of Agricultural ScienceChangshaHunon 410000China

Comprehensive Summary Developing new catalysts for highly selectivity and conversion of saturated C(sp^(3))-H bonds is of great *** order to obtain catalysts with high catalytic performance,six Eu-based MOFs with different structural characteristics were obtained by using europium ions and different organic acid ligands,namely Eu-1~***-1,Eu-2 and Eu-3 featured three-dimensional structures,while Eu-4 and Eu-5 featured two-dimensional structures.

关键词： Metal-organic frameworks Heterogeneous catalysis Rare earths Dimensional reduction Selectively oxidize C(sp^(3))-H

Major complications after radiofrequency ablation for liver tumors:Analysis of 255 patients

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World Journal of Gastroenterology 2009年第21期15卷 2651-2656页

作者： Wen-Tao Kong wei-wei Zhang yu-dong Qiu Tie Zhou Jun-Lan Qiu wei Zhang Yi-Tao Ding Department of Hepatobiliary Surgery Drum Tower Hospital Medical College of Nanjing University Nanjing 210008 Jiangsu Province China

AIM:To investigate the major complications after radiofrequency ablation(RFA) for the treatment of liver tumors and analyze possible risk factors that precipitate these ***:From March 2001 to April 2008,255 patients with liver tumors(205 male,50 female;age range,18-89 years;mean age,56.0 years) who received RFA were enrolled in this *** these patients,212 had hepatocellular carcinoma,39 had metastatic liver tumors and four had cholangiocellular *** hundred and forty eight patients had a single tumor,and 107 had multiple *** diameter of the tumors ranged 1.3-20 cm(mean,5.1 cm).All patients were treated with a cooled-tip perfusion electrode attached to a radiofrequency generator(Radionics,Burlington,MA,USA).RFA was performed via the percutaneous approach(n = 257),laparoscopy(n = 7),or open surgical treatment(n = 86).The major complications related to RFA were *** resultant data were analyzed to determine risk factors associated these ***:Among the 255 patients,425 liver tumors were treated and 350 RFA sessions were ***-seven(10%) major complications were observed which included 13 cases of liver failure,10 cases of hydrothorax requiring drainage,three casesof tumor seeding,one case of upper gastrointestinal bleeding,one case ofintrahepatic abscess,one case of bile duct injury,one case of cardiac arrest,and five cases of *** patients had more than two *** failure was the most severe complication and was associated with the highest *** patients died due to worsening liver ***-Pugh classification(P = 0.001) and choice of approach(P = 0.045) were related to post-treatment liver failure,whereas patient age,tumor size and number were not significant factors precipitating this ***:RFA can be accepted as a relatively safe procedure for the treatment of liver ***,attention should be paid to possible com

关键词： Complication Hepatocellular carcinoma Metastatic liver tumor Radiofrequency ablation Liverfailure

Effect of Microstructure on Corrosion Fatigue Behavior of 1500 MPa Level Carbide-Free Bainite/Martensite Dual-Phase High Strength Steel

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Journal of Iron and Steel Research International 2011年第4期18卷 63-67页

作者： XU Lei wei dong-yuan yu Yang ZHANG Han BAI Bing-zhe Laboratory of Advanced Materials Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

Influence of microstructure of the experimental steels on the corrosion fatigue behavior in 3.5% of NaCl aqueous solution was *** results show that compared with the full martensite（FM）steel,the carbide-free bainite/martensite（CFB/M）steel has higher corrosion fatigue strength and corrosion fatigue crack threshold（ΔKthcf）,and lower corrosion crack propagation rate [（da/dN）cf].

关键词： high strength steel carbide-free bainite/martensite dual-phase steel corrosion fatigue

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Fusobacterium nucleatum promotes colon cancer progression by changing the mucosal microbiota and colon transcriptome in a mouse model

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World Journal of Gastroenterology 2022年第18期28卷 1981-1995页

作者： Na Wu yu-Qing Feng Na Lyu Di Wang wei-dong yu Yong-Fei Hu Department of Central Laboratory&Institute of Clinical Molecular Biology Peking University People’s HospitalBeijing 100044China State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China

BACKGROUND Fusobacterium nucleatum(***)has long been known to cause opportunistic infections and has recently been implicated in colorectal cancer(CRC),which has attracted broad ***,the mechanism by which it is involved in CRC development is not fully *** To explore its potential causative role in CRC development,we evaluated the colon pathology,mucosa barrier,colon microbiota and host transcriptome profile after *** infection in an azoxymethane/dextran sulfate sodium salt(AOM/DSS)mouse *** Three groups of mice were compared to reveal the differences,i.e.,the control,AOM/DSS-induced CRC and AOM/DSS-FUSO infection *** Both the AOM/DSS and AOM/DSS-FUSO groups exhibited a significantly reduced body weight and increased tumor numbers than the control group,and AOM/DSS mice with *** infection showed the highest tumor formation ratio among the three ***,the colon pathology was the most serious in the AOM/DSS-FUSO *** found that the structure of the colon microbiota changed considerably after *** infection;striking differences in mucosal microbial population patterns were observed between the AOM/DSS-FUSO and AOM/DSS groups,and inflammation-inducing bacteria were enriched in the mucosal microbiota in the AOM/DSS-FUSO *** comparing intestinal transcriptomics data from AOM vs AOM/DSSFUSO mice,we showed that transcriptional activity was strongly affected by dysbiosis of the gut *** most microbiota-sensitive genes were oncogenes in the intestine,and the cyclic adenosine monophosphate signaling pathway,neuroactive ligand–receptor interaction,PPAR signaling pathway,retinol metabolism,mineral absorption and drug metabolism were highly enriched in the AOM/DSS-FUSO ***,we showed that microbial dysbiosis driven by *** infection enriched eight taxa belonging to Proteobacteria,which correlates with increased expression of oncogenic *** Our

关键词： Fusobacterium nucleatum Mucosal microbiota Transcriptome Colorectal cancer Inflammation-inducing bacteria

Four New Terpyridine Complexes Based Polyoxometalates with[W_(10)O_(32)]^(4-) Anions as High-Efficiency Dual-Site Catalysis for Thioether Oxidation Reaction

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Chinese Journal of Chemistry 2024年第6期42卷 592-598页

作者： Yin Zhang wei-dong yu Fang-Qian Wang Xiangnan Wang Jiawan Zhou Chao Liu Jun Yan Junior Education Department Changsha Normal UniversityChangshaHunan410100 China School of Science Hunan University of Technology and BusinessChangshaHunan410000 China College of Chemistry and Chemical Engineering Central South UniversityChangshaHunan410000 China

Polyoxometalates modified with complex cations have attracted increasing attention because of the fascinating properties and the controllable *** adjusting the synthesis conditions,four new terpyridine complexes based hybrid POMs,[(TPY-H)CuCl]_(4)[W_(10)O_(32)]·2DMF·2H_(2)O(1),[(TPY-H)Cu(DMSO)(H_(2)O)]_(2)[W_(10)O_(32)]·2H_(2)O(2),[(TPY-H)_(2)Cu]_(2)[W_(10)O_(32)]·6DMSO·8H_(2)O(3) and[(TPY-Br)CuCl(DMSO)(H_(2)O)]_(2)[(TPY-Br)CuCl]_(2)[W_(10)O_(32)]·2DMSO·4H_(2)O(4),were prepared by using‘one-pot’***-crystal X-ray diffraction analyses,infrared radiation,etc.,revealed the structural composition of compounds 1—4,which indicates that synthesis conditions have a directional regulatory effect on the compounds *** oxidation catalytic reactions show 1—4 have good catalytic activities,and powder X-ray diffraction and thermogravimetry analysis show 1—4 have superduper catalytic ***,4 has better catalytic activity because of the different structure of terpyridine ***,a possible mechanism of dual-site catalysis by both cations and anions is proposed.

关键词： Polyoxometalates Terpyridine complexes Thioether oxidation Dual-site catalysis Clusters

Phosphatidylinositol 3-kinase CB association with preoperative radiotherapy response in rectal adenocarcinoma

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World Journal of Gastroenterology 2014年第43期20卷 16258-16267页

作者： wei-dong yu Yi-Fan Peng Hong-Da Pan Lin Wang Kun Li Jin Gu Institute of Clinical Molecular Biology People’s HospitalPeking University Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) Department of Colorectal SurgeryPeking University Cancer Hospital and Institute Department of Gastroenterology People’s HospitalPeking University

AIM: To examine the correlation of phosphatidylinositol 3-kinase (PIK3) CB expression with preoperative radiotherapy response in patients with stage II/III rectal adenocarcinoma.

关键词： Phosphatidylinositol 3-kinase CB Tumor regression grade ypT stage Disease-free survival Therapeutic target Rectal cancer Preoperative radiotherapy

Abelson interactor 1 splice isoform-L plays an anti-oncogenic role in colorectal carcinoma through interactions with WAVE2 and fulllength Abelson interactor 1

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World Journal of Gastroenterology 2021年第15期27卷 1595-1615页

作者： Kun Li Yi-Fan Peng Jing-Zhu Guo Mei Li yu Zhang Jing-Yi Chen Ting-Ru Lin Xin yu wei-dong yu Department of Central Laboratory and Institute of Clinical Molecular Biology Peking University People’s HospitalBeijing 100044China Department of Gastroenterology Peking University People’s HospitalPeking UniversityBeijing 100044China Gastrointestinal Cancer Center Unit IIIKey Laboratory of Carcinogenesis and Translational Research(Ministry of Education)Peking University Cancer Hospital and InstituteBeijing 100142China Department of Pediatrics Peking University People’s HospitalBeijing 100044China Department of Central Laboratory and Institute of Clinical Molecular Biology Peking University People's HospitalBeijing 100044China Department of Hepatobiliary Surgery Peking University People’s HospitalBeijing 100044China

BACKGROUND Expression of the full-length isoform of Abelson interactor 1(ABI1),ABI1-p65,is increased in colorectal carcinoma(CRC)and is thought to be involved in one or more steps leading to tumor progression or *** ABI1 splice isoform-L(ABI1-SiL)has conserved WAVE2-binding and SH3 domains,lacks the homeodomain homologous region,and is missing the majority of PxxP-and Pro-rich domains found in full-length ***,ABI1-SiL domain structure suggests that the protein may regulate CRC cell morphology,adhesion,migration,and metastasis via interactions with the WAVE2 complex *** To investigate the potential role and underlying mechanisms associated with ABI1-SiL-mediated regulation of *** ABI1-SiL mRNA expression in CC tissue and cell lines was measured using both qualitative reverse transcriptase-polymerase chain reaction(RT-PCR)and realtime quantitative RT-PCR.A stably ABI1-SiL overexpressing SW480 cell model was constructed using Lipofectamine 2000,and cells selected with *** J software,CCK8,and transwell assays were used to investigate SW480 cell surface area,proliferation,migration,and ***,Western blot,and co-localization assays were performed to explore intermolecular interactions between ABI1-SiL,WAVE2,and ABI1-p65 *** ABI1-SiL was expressed in normal colon tissue and was significantly decreased in CRC cell lines and *** of ABI1-SiL in SW480 cells significantly increased the cell surface area and inhibited the adhesive and migration properties of the cells,but did not alter their invasive *** to ABI1-p65,ABI1-SiL still binds WAVE2,and the ABI1-p65 isoform in SW480 ***,co-localization assays confirmed these intermolecular *** These results support a model in which ABI1-SiL plays an anti-oncogenic role by competitively binding to WAVE2 and directly interacting with phosphorylated and non-phosphorylated ABI1-p65,functioning as

关键词： Colon cancer Abelson interactor 1 isoform-L Cell adhesion Cell migration WAVE2

Photothermal conversion property studies of polyoxophosphitemolybdate derivatives self-assembled through microwave-assisted synthesis

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Rare Metals 2024年第11期43卷 6023-6033页

作者： Mei-Qian Fu yu-Yang Han Yan-Mei Nie Yan-Di Liu yue Liu Peng He wei-dong yu Xiang Li Piao He Juan Li Jun Yan School of Chemistry and Chemical Engineering Central South UniversityChangsha 410000China Guangxi Huiyuan Manganese Industry Co. LtdLaibin 530022GuangxiChina School of Science Hunan University of Technology and BusinessChangsha 410000China Changjun High School of Changsha Changsha 410000China

Photothermal conversion is one of the key technologies in solar energy collection,seawater desalination,photo thermal treatment and other important *** order to develop next generation photothermal materials,four poly oxometalates,[(CH_(3))_(2)NH_(2)]_(12)H_(5)[Ni_(3)Mo_(18)O_(54)(HPO_(3))_(10)(PO_(4))]·_(18)H_(2)O(Compound 1),[(CH_(3))_(2)NH_(2)]_(1)Na_(11)[Ni_(2)Mo_(8)O_(22)(HPO_(3))_(10)]·16H_(2)O(Compound 2),Na_(15)(OH)_5[Mo_(6)O_(18)(HPO_(3))_(4)]_(2)[MoO]_(1.5)·16H_(2)O(Compound 3),[(CH_(3))_(2)NH_(2)]_(4)Na_(11)[Na[Mo_6O_(15)(HPO_(3))_(4)]_(2)]·_(18)H_(2)O(Compound 4),are successfully designed and synthesized via a micro wave-as sis ted reaction *** 1-4 not only exhibit broad absorption and notable photothermal conversion effects in near-infrared(NIR)region,but also have high photothermal conversion efficiencies and high quality NIR photothermal imaging effects under NIR laser *** 1 shows the best photothermal conversion effect,and it provides a unique model to explore the relationship between the complex metal oxide structure and photothermal conversion behavior at the molecular *** the experimental results and theoretical calculations consistently conclude that the charge and degree of electron delocalization on the Cluster have a robust influence on the photothermal conversion,as well as the aggregation microstructures.

关键词： Microwave Photothermal materials Polyoxometalate Polyoxomolydate derivatives Selfassembly

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